Theorem lmodvs0 14002

Description: Anything times the zero vector is the zero vector. Equation 1b of [Kreyszig] p. 51. (Contributed by NM, 12-Jan-2014.) (Revised by Mario Carneiro, 19-Jun-2014.)

Hypotheses

Ref	Expression
lmodvs0.f	|- F = (Scalar ` W )
lmodvs0.s	|- .x. = ( .s ` W )
lmodvs0.k	|- K = ( Base ` F )
lmodvs0.z	|- .0. = ( 0g ` W )

Assertion

Ref	Expression
lmodvs0	|- ( ( W e. LMod /\ X e. K ) -> ( X .x. .0. ) = .0. )

Proof of Theorem lmodvs0

Step	Hyp	Ref	Expression
1		lmodvs0.f	. . . . 5 |- F = (Scalar ` W )
2	1	lmodring 13975	. . . 4 |- ( W e. LMod -> F e. Ring )
3		lmodvs0.k	. . . . 5 |- K = ( Base ` F )
4		eqid 2204	. . . . 5 |- ( .r ` F ) = ( .r ` F )
5		eqid 2204	. . . . 5 |- ( 0g ` F ) = ( 0g ` F )
6	3, 4, 5	ringrz 13724	. . . 4 |- ( ( F e. Ring /\ X e. K ) -> ( X ( .r ` F ) ( 0g ` F ) ) = ( 0g ` F ) )
7	2, 6	sylan 283	. . 3 |- ( ( W e. LMod /\ X e. K ) -> ( X ( .r ` F ) ( 0g ` F ) ) = ( 0g ` F ) )
8	7	oveq1d 5949	. 2 |- ( ( W e. LMod /\ X e. K ) -> ( ( X ( .r ` F ) ( 0g ` F ) ) .x. .0. ) = ( ( 0g ` F ) .x. .0. ) )
9		simpl 109	. . . 4 |- ( ( W e. LMod /\ X e. K ) -> W e. LMod )
10		simpr 110	. . . 4 |- ( ( W e. LMod /\ X e. K ) -> X e. K )
11	2	adantr 276	. . . . 5 |- ( ( W e. LMod /\ X e. K ) -> F e. Ring )
12	3, 5	ring0cl 13701	. . . . 5 |- ( F e. Ring -> ( 0g ` F ) e. K )
13	11, 12	syl 14	. . . 4 |- ( ( W e. LMod /\ X e. K ) -> ( 0g ` F ) e. K )
14		eqid 2204	. . . . . 6 |- ( Base ` W ) = ( Base ` W )
15		lmodvs0.z	. . . . . 6 |- .0. = ( 0g ` W )
16	14, 15	lmod0vcl 13997	. . . . 5 |- ( W e. LMod -> .0. e. ( Base ` W ) )
17	16	adantr 276	. . . 4 |- ( ( W e. LMod /\ X e. K ) -> .0. e. ( Base ` W ) )
18		lmodvs0.s	. . . . 5 |- .x. = ( .s ` W )
19	14, 1, 18, 3, 4	lmodvsass 13993	. . . 4 |- ( ( W e. LMod /\ ( X e. K /\ ( 0g ` F ) e. K /\ .0. e. ( Base ` W ) ) ) -> ( ( X ( .r ` F ) ( 0g ` F ) ) .x. .0. ) = ( X .x. ( ( 0g ` F ) .x. .0. ) ) )
20	9, 10, 13, 17, 19	syl13anc 1251	. . 3 |- ( ( W e. LMod /\ X e. K ) -> ( ( X ( .r ` F ) ( 0g ` F ) ) .x. .0. ) = ( X .x. ( ( 0g ` F ) .x. .0. ) ) )
21	14, 1, 18, 5, 15	lmod0vs 14001	. . . . 5 |- ( ( W e. LMod /\ .0. e. ( Base ` W ) ) -> ( ( 0g ` F ) .x. .0. ) = .0. )
22	17, 21	syldan 282	. . . 4 |- ( ( W e. LMod /\ X e. K ) -> ( ( 0g ` F ) .x. .0. ) = .0. )
23	22	oveq2d 5950	. . 3 |- ( ( W e. LMod /\ X e. K ) -> ( X .x. ( ( 0g ` F ) .x. .0. ) ) = ( X .x. .0. ) )
24	20, 23	eqtrd 2237	. 2 |- ( ( W e. LMod /\ X e. K ) -> ( ( X ( .r ` F ) ( 0g ` F ) ) .x. .0. ) = ( X .x. .0. ) )
25	8, 24, 22	3eqtr3d 2245	1 |- ( ( W e. LMod /\ X e. K ) -> ( X .x. .0. ) = .0. )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1372   e. wcel 2175   ` cfv 5268  (class class class)co 5934   Basecbs 12751   .rcmulr 12829  Scalarcsca 12831   .scvsca 12832   0gc0g 13006   Ringcrg 13676   LModclmod 13967

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 615  ax-in2 616  ax-io 710  ax-5 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-13 2177  ax-14 2178  ax-ext 2186  ax-sep 4161  ax-pow 4217  ax-pr 4252  ax-un 4478  ax-setind 4583  ax-cnex 7998  ax-resscn 7999  ax-1cn 8000  ax-1re 8001  ax-icn 8002  ax-addcl 8003  ax-addrcl 8004  ax-mulcl 8005  ax-addcom 8007  ax-addass 8009  ax-i2m1 8012  ax-0lt1 8013  ax-0id 8015  ax-rnegex 8016  ax-pre-ltirr 8019  ax-pre-ltadd 8023

This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1375  df-fal 1378  df-nf 1483  df-sb 1785  df-eu 2056  df-mo 2057  df-clab 2191  df-cleq 2197  df-clel 2200  df-nfc 2336  df-ne 2376  df-nel 2471  df-ral 2488  df-rex 2489  df-reu 2490  df-rmo 2491  df-rab 2492  df-v 2773  df-sbc 2998  df-csb 3093  df-dif 3167  df-un 3169  df-in 3171  df-ss 3178  df-nul 3460  df-pw 3617  df-sn 3638  df-pr 3639  df-op 3641  df-uni 3850  df-int 3885  df-br 4044  df-opab 4105  df-mpt 4106  df-id 4338  df-xp 4679  df-rel 4680  df-cnv 4681  df-co 4682  df-dm 4683  df-rn 4684  df-res 4685  df-iota 5229  df-fun 5270  df-fn 5271  df-fv 5276  df-riota 5889  df-ov 5937  df-oprab 5938  df-mpo 5939  df-pnf 8091  df-mnf 8092  df-ltxr 8094  df-inn 9019  df-2 9077  df-3 9078  df-4 9079  df-5 9080  df-6 9081  df-ndx 12754  df-slot 12755  df-base 12757  df-sets 12758  df-plusg 12841  df-mulr 12842  df-sca 12844  df-vsca 12845  df-0g 13008  df-mgm 13106  df-sgrp 13152  df-mnd 13167  df-grp 13253  df-mgp 13601  df-ring 13678  df-lmod 13969

This theorem is referenced by:  lmodfopne  14006  lsssn0  14050